Ethernet port doesn't detect the cable is connected and doesn't function
It's since this morning that I can't make my en0 ethernet port work. Please note: changed dozens of cables, hubs, etc. The port simply doesn't detect the cable is plugged in and the actual network interface configuration crashes with the following log upon system boot-up:
Process: eapolclient [403]
Path: /System/Library/SystemConfiguration/EAPOLController.bundle/Resources/eapolclien t
Identifier: eapolclient
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: bash [368]
Date/Time: 2009-06-23 19:42:52.593 +0200
OS Version: Mac OS X 10.5.7 (9J61)
Report Version: 6
Anonymous UUID: 750052DD-67C5-4AEB-8843-9AB2F6B54967
Exception Type: EXCBADACCESS (SIGBUS)
Exception Codes: KERNPROTECTIONFAILURE at 0x0000000000000000
Crashed Thread: 0
Thread 0 Crashed:
0 com.apple.CoreFoundation 0x96ff159b CFDictionaryGetCount + 43
1 com.apple.CoreFoundation 0x96ff435d CFDictionaryCreateCopy + 29
2 eapolclient 0x000056ba Supplicantupdateconfiguration + 49
3 eapolclient 0x00003316 main + 1303
4 eapolclient 0x00001d06 start + 54
Thread 1:
0 libSystem.B.dylib 0x90be86fa select$DARWIN_EXTSN + 10
1 libSystem.B.dylib 0x90bca155 pthreadstart + 321
2 libSystem.B.dylib 0x90bca012 thread_start + 34
Thread 0 crashed with X86 Thread State (32-bit):
eax: 0xa087d4ec ebx: 0x96ff157e ecx: 0x00000001 edx: 0x00000010
edi: 0x001021c0 esi: 0x00000000 ebp: 0xbffff6a8 esp: 0xbffff690
ss: 0x0000001f efl: 0x00010283 eip: 0x96ff159b cs: 0x00000017
ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000037
cr2: 0x00000000
Binary Images:
0x1000 - 0x8ff3 eapolclient ??? (???) <601ef87898001b311ead6372f01bdc5f> /System/Library/SystemConfiguration/EAPOLController.bundle/Resources/eapolclien t
0x21000 - 0x37fe4 com.apple.EAP8021X 9.0.5 (???) <a7b029e76077ad0f1decd8912359f590> /System/Library/PrivateFrameworks/EAP8021X.framework/Versions/A/EAP8021X
0x42000 - 0x6cff8 com.apple.framework.Apple80211 5.2.7 (527.2) <5982190f9caa25fca18b8753671d0d64> /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Apple80211
0x8fe00000 - 0x8fe2db43 dyld 97.1 (???) <100d362e03410f181a34e04e94189ae5> /usr/lib/dyld
0x90b98000 - 0x90cffff3 libSystem.B.dylib ??? (???) <b47c8e6e45aef620730710a732bf1930> /usr/lib/libSystem.B.dylib
0x92188000 - 0x921e5ffb libstdc++.6.dylib ??? (???) <f75e5133d72769de5ce6c06153fc65f6> /usr/lib/libstdc++.6.dylib
0x92ee9000 - 0x92f14fe7 libauto.dylib ??? (???) <2e44c523b851e8e25f05d13a48070a58> /usr/lib/libauto.dylib
0x9433f000 - 0x9441ffff libobjc.A.dylib ??? (???) <400e943f9e8a678eea22a1d1205490ee> /usr/lib/libobjc.A.dylib
0x945fd000 - 0x94689ff7 com.apple.framework.IOKit 1.5.2 (???) <97b9f9d584f48891377f0481b9104434> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x947c8000 - 0x947d6ffd libz.1.dylib ??? (???) <a98b3b221a72b54faf73ded3dd7000e5> /usr/lib/libz.1.dylib
0x95697000 - 0x95868ffb com.apple.security 5.0.5 (36371) <c13e0bb1acfdcf94be4d3ee118ef190e> /System/Library/Frameworks/Security.framework/Versions/A/Security
0x95938000 - 0x9596ffff com.apple.SystemConfiguration 1.9.2 (1.9.2) <eab546255ac099b9616df999c9359d0e> /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfi guration
0x95a2f000 - 0x95ae1ffb libcrypto.0.9.7.dylib ??? (???) <9d714c92872a93dd127ea8556b2c8945> /usr/lib/libcrypto.0.9.7.dylib
0x96faf000 - 0x970e2fef com.apple.CoreFoundation 6.5.6 (476.18) <2d52bab73660117571bd6486dc318f8e> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x970e3000 - 0x970e7fff libmathCommon.A.dylib ??? (???) /usr/lib/system/libmathCommon.A.dylib
0x9722b000 - 0x97232fe9 libgcc_s.1.dylib ??? (???) <e280ddf3f5fb3049e674edcb109f389a> /usr/lib/libgcc_s.1.dylib
0x97315000 - 0x9744eff7 libicucore.A.dylib ??? (???) <cac059ebdac7d9a63ee0f7a648c9f6cf> /usr/lib/libicucore.A.dylib
0xfffe8000 - 0xfffebfff libobjc.A.dylib ??? (???) /usr/lib/libobjc.A.dylib
0xffff0000 - 0xffff1780 libSystem.B.dylib ??? (???) /usr/lib/libSystem.B.dylib
I had a similar issue with a MacBook Pro. When connecting the network cable, the network preferences would show 'not connected'. I thought it was hardware, but when I transferred the user to another Mac, I found that that ethernet device all the sudden stopped working as well.
I was able to get the ethernet back with:
System Preferences
->Network
->Assist Me...
->Diagnostics...
At some point the ethernet device went green and all was well.
Maybe this will help.
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